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Principal Solid Propulsion Development Engineer - Hypersonics

Huntsville, ALOnsiteFull TimePrincipal$131,300–$237,350 /yrPosted 1 month agoVisa sponsorship available

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Required skills

  • hypersonics vehicle
  • propulsion systems
  • spacecraft
  • missile systems
  • civil space programs
  • military space programs
  • commercial space programs
  • interdisciplinary team
  • subcontractors
  • solid rocket motor components

Nice to have

  • rapid iteration environment
  • DoD projects
  • NASA projects
  • aerospace development projects
  • government test agencies
  • free-jet test testing

Role summary

Leidos is seeking a Principal Solid Propulsion Development Engineer for a hypersonics vehicle program. This role involves leading the design, build, and testing of solid rocket motor components, interfacing with suppliers, and supporting ground testing. The position requires a Bachelor's degree in engineering with 10-12 years of relevant experience, a Secret security clearance, and strong technical leadership and project planning skills. Preferred qualifications include a Master's degree and experience with government aerospace projects and specific testing environments.

Leidos is seeking a Solid Propulsion Development Engineer to lead and oversee work on a hypersonics vehicle and other programs, joining a diverse team that develops propulsion systems for spacecraft, missile systems, and a wide range of critical technologies for civil, military, and commercial space programs. This individual will work in a fast-paced, interdisciplinary team, interfacing with other project teams within Leidos as well as subcontractors to develop the solid propulsion system for a hypersonic vehicle.

Primary responsibilities:

  • Serve as technical authority for task focused on design and development of critical propulsion related hardware.
  • Direct the design, build, and test of prototype solid rocket motor components.
  • Understand and negotiate design elements with propulsion system suppliers.

Basic Qualifications:

  • Bachelor’s degree in aerospace engineering, mechanical engineering, or similar from an ABET accredited university.
  • Minimum of 10-12 years of relevant experience in rocket propulsion development or test engineering roles.
  • Understanding of functional performance requirements as well as component designs for solid rocket motor applications.
  • Experience in planning for and supporting ground testing of solid propulsion systems, including thermal characterization, environmental testing, and static firing.
  • Demonstrated ability to lead and manage a multidisciplinary team, conduct trade studies, and develop analysis & evaluation tools.
  • Knowledge of applicable standards and regulations, including manufacturing and testing policies and directives.
  • Able to write clear, concise, and comprehensive technical reports and present results to multi-disciplinary teams and customer stakeholders.
  • Project planning and scheduling, including selection and management of multiple critical suppliers.
    Under Basic Qualifications:
  • Must be resident of the North Alabama area or willing to relocate to the Huntsville - North Alabama, AL area.
  • Active Secret security clearance required, with the ability to obtain a Top Secret clearance if needed.

Preferred Qualifications:

  • Master’s degree in aerospace engineering, mechanical engineering, or similar from an ABET accredited university.
  • Development testing experience in a rapid iteration environment.
  • Experience with DoD, NASA, or other aerospace development projects.
  • Experience working with government test agencies
  • Experience with free-jet test testing, especially for solid-fuel ramjet (SFRJ) systems.
  • Experience with missile systems in a production environment.
  • Active Top Secret clearance.

AppKinetic

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.

Original Posting:

October 6, 2026

For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range:

Pay Range $131,300.00 - $237,350.00

The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

Sample Leidos interview questions

  • 1

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  • 2

    Buildings with an Ocean View Find all buildings that have an ocean view. Input: heights = [1,2,3,4] Output: [3] Explanation: Since the ocean is to the right, only the rightmost tallest building (index 3) is not blocked by any others.

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  • 3

    Merge K Sorted Linked Lists Merge K sorted linked lists. Input: lists = [[2,2,3],[1,5]] Output: [1,2,2,3,5] Explanation: Extracts the smallest current node iteratively using a priority queue to build a single merged and sorted linked list.

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  • 4

    Optimal Meeting Point Calculate the optimal meeting point for multiple people on a 2D grid. Input: grid = [[1,0],[0,1]] Output: 2 Explanation: The optimal meeting point is either (0,1) or (1,0), requiring exactly 1 step from each person resulting in a total distance of 2.

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  • 5

    Maximize the minimum distance between aggressive cows in stalls. Input: stalls = [0,4,3,7,10,9], cows = 3 Output: 4 Explanation: Placing the cows at positions 0, 4, and 10 yields a maximum possible minimum distance of 4 between any two cows.

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